path: root/toolkit/components/glean/build_scripts/glean_parser_ext/templates/rust.jinja2

// -*- mode: Rust -*-

// AUTOGENERATED BY glean_parser.  DO NOT EDIT.
{# The rendered source is autogenerated, but this
Jinja2 template is not. Please file bugs! #}

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

{% macro generate_extra_keys(obj) -%}
{% for name, _ in obj["_generate_enums"] %}
{# we always use the `extra` suffix, because we only expose the new event API #}
{% set suffix = "Extra" %}
{% if obj|attr(name)|length %}
    {{ extra_keys_with_types(obj, name, suffix)|indent }}
{% endif %}
{% endfor %}
{%- endmacro -%}

{%- macro extra_keys_with_types(obj, name, suffix) -%}
#[derive(Default, Debug, Clone, Hash, Eq, PartialEq)]
pub struct {{ obj.name|Camelize }}{{ suffix }} {
    {% for item, type in obj|attr(name) %}
    pub {{ item|snake_case }}: Option<{{type|extra_type_name}}>,
    {% endfor %}
}

impl ExtraKeys for {{ obj.name|Camelize }}{{ suffix }} {
    const ALLOWED_KEYS: &'static [&'static str] = {{ obj.allowed_extra_keys|extra_keys }};

    fn into_ffi_extra(self) -> ::std::collections::HashMap<String, String> {
      let mut map = ::std::collections::HashMap::new();
      {% for key, _ in obj|attr(name) %}
      self.{{key|snake_case}}.and_then(|val| map.insert("{{key|snake_case}}".into(), val.to_string()));
      {% endfor %}
      map
    }
}
{%- endmacro -%}

{% macro generate_label_enum(obj) %}
#[repr(u16)]
pub enum {{ obj.name|Camelize }}Label {
    {% for label in obj.ordered_labels %}
    {# Specifically _not_ using r# as C++ doesn't have it #}
    {{ label|Camelize }} = {{loop.index0}},
    {% endfor %}
    __Other__,
}
impl From<u16> for {{ obj.name|Camelize }}Label {
    fn from(v: u16) -> Self {
        match v {
            {% for label in obj.ordered_labels %}
            {{ loop.index0 }} => Self::{{ label|Camelize }},
            {% endfor %}
            _ => Self::__Other__,
        }
    }
}
impl Into<&'static str> for {{ obj.name|Camelize }}Label {
    fn into(self) -> &'static str {
        match self {
            {% for label in obj.ordered_labels %}
            Self::{{ label| Camelize }} => "{{label}}",
            {% endfor %}
            Self::__Other__ => "__other__",
        }
    }
}
{%- endmacro -%}

pub enum DynamicLabel { }

{% for category_name, objs in all_objs.items() %}
pub mod {{ category_name|snake_case }} {
    use crate::private::*;
    #[allow(unused_imports)] // CommonMetricData might be unused, let's avoid warnings
    use glean::CommonMetricData;
    #[allow(unused_imports)] // HistogramType might be unusued, let's avoid warnings
    use glean::HistogramType;
    use once_cell::sync::Lazy;

    {% for obj in objs.values() %}
    {% if obj|attr("_generate_enums") %}
{{ generate_extra_keys(obj) }}
    {%- endif %}
    {% if obj.labeled and obj.labels and obj.labels|length %}
    {{ generate_label_enum(obj)|indent }}
    {% endif %}
    #[allow(non_upper_case_globals)]
    /// generated from {{ category_name }}.{{ obj.name }}
    ///
    /// {{ obj.description|wordwrap() | replace('\n', '\n    /// ') }}
    {% if obj.type == "counter" and obj.send_in_pings|length == 1 and not obj.disabled and obj.lifetime|rust == "Lifetime::Ping" %}
    {# Use optimized CounterMetric ctor in a common case (esp. for Use Counters) #}
    pub static {{ obj.name|snake_case }}: Lazy<{{ obj|type_name }}> = Lazy::new(|| {
        CounterMetric::codegen_new(
            {{obj|metric_id}},
            "{{obj.category}}",
            "{{obj.name}}",
            "{{obj.send_in_pings[0]}}"
        )
    });
    {% else %}
    pub static {{ obj.name|snake_case }}: Lazy<{{ obj|type_name }}> = Lazy::new(|| {
        {{ obj|ctor }}({{obj|metric_id}}.into(), CommonMetricData {
            {% for arg_name in common_metric_data_args if obj[arg_name] is defined %}
            {{ arg_name }}: {{ obj[arg_name]|rust }},
            {% endfor %}
            ..Default::default()
        }
        {%- for arg_name in extra_args if obj[arg_name] is defined and arg_name not in common_metric_data_args and arg_name != 'allowed_extra_keys' -%}
            , {{ obj[arg_name]|rust }}
        {%- endfor -%}
        {{ ", " if obj.labeled else ")\n" }}
        {%- if obj.labeled -%}
        {%- if obj.labels -%}
        Some({{ obj.labels|rust }})
        {%- else -%}
        None
        {%- endif -%})
        {% endif %}
    });
    {% endif %}

    {% endfor %}
}
{% endfor %}

{% if metric_by_type|length > 0 %}
#[allow(dead_code)]
pub(crate) mod __glean_metric_maps {
    use std::collections::HashMap;

    use crate::metrics::extra_keys_len;
    use crate::private::*;
    use once_cell::sync::Lazy;

{% for typ, metrics in metric_by_type.items() %}
    pub static {{typ.0}}: Lazy<HashMap<MetricId, &Lazy<{{typ.1}}>>> = Lazy::new(|| {
        let mut map = HashMap::with_capacity({{metrics|length}});
        {% for metric in metrics %}
        map.insert({{metric.0}}.into(), &super::{{metric.1}});
        {% endfor %}
        map
    });

{% endfor %}

    /// Wrapper to record an event based on its metric ID.
    ///
    /// # Arguments
    ///
    /// * `metric_id` - The metric's ID to look up
    /// * `extra`     - An map of (extra key id, string) pairs.
    ///                 The map will be decoded into the appropriate `ExtraKeys` type.
    /// # Returns
    ///
    /// Returns `Ok(())` if the event was found and `record` was called with the given `extra`,
    /// or an `EventRecordingError::InvalidId` if no event by that ID exists
    /// or an `EventRecordingError::InvalidExtraKey` if the `extra` map could not be deserialized.
    pub(crate) fn record_event_by_id(metric_id: u32, extra: HashMap<String, String>) -> Result<(), EventRecordingError> {
        match metric_id {
{% for metric_id, event in events_by_id.items() %}
          {{metric_id}} => {
              assert!(
                  extra_keys_len(&super::{{event}}) != 0 || extra.is_empty(),
                  "No extra keys allowed, but some were passed"
              );

              super::{{event}}.record_raw(extra);
              Ok(())
          }
{% endfor %}
           _ => Err(EventRecordingError::InvalidId),
        }
    }

    /// Wrapper to record an event based on its metric ID, with a provided timestamp.
    ///
    /// # Arguments
    ///
    /// * `metric_id` - The metric's ID to look up
    /// * `timestamp` - The time at which this event was recorded.
    /// * `extra`     - An map of (extra key id, string) pairs.
    ///                 The map will be decoded into the appropriate `ExtraKeys` type.
    /// # Returns
    ///
    /// Returns `Ok(())` if the event was found and `record` was called with the given `extra`,
    /// or an `EventRecordingError::InvalidId` if no event by that ID exists
    /// or an `EventRecordingError::InvalidExtraKey` if the event doesn't take extra pairs,
    /// but some are passed in.
    pub(crate) fn record_event_by_id_with_time(metric_id: MetricId, timestamp: u64, extra: HashMap<String, String>) -> Result<(), EventRecordingError> {
        match metric_id {
{% for metric_id, event in events_by_id.items() %}
          MetricId({{metric_id}}) => {
              if extra_keys_len(&super::{{event}}) == 0 && !extra.is_empty() {
                return Err(EventRecordingError::InvalidExtraKey);
              }

              super::{{event}}.record_with_time(timestamp, extra);
              Ok(())
          }
{% endfor %}
           _ => Err(EventRecordingError::InvalidId),
        }
    }

    /// Wrapper to get the currently stored events for event metric.
    ///
    /// # Arguments
    ///
    /// * `metric_id` - The metric's ID to look up
    /// * `ping_name` - (Optional) The ping name to look into.
    ///                 Defaults to the first value in `send_in_pings`.
    ///
    /// # Returns
    ///
    /// Returns the recorded events or `None` if nothing stored.
    ///
    /// # Panics
    ///
    /// Panics if no event by the given metric ID could be found.
    pub(crate) fn event_test_get_value_wrapper(metric_id: u32, ping_name: Option<String>) -> Option<Vec<RecordedEvent>> {
        match metric_id {
{% for metric_id, event in events_by_id.items() %}
           {{metric_id}} => super::{{event}}.test_get_value(ping_name.as_deref()),
{% endfor %}
           _ => panic!("No event for metric id {}", metric_id),
        }
    }

    /// Check the provided event for errors.
    ///
    /// # Arguments
    ///
    /// * `metric_id` - The metric's ID to look up
    /// * `ping_name` - (Optional) The ping name to look into.
    ///                 Defaults to the first value in `send_in_pings`.
    ///
    /// # Returns
    ///
    /// Returns a string for the recorded error or `None`.
    ///
    /// # Panics
    ///
    /// Panics if no event by the given metric ID could be found.
    #[allow(unused_variables)]
    pub(crate) fn event_test_get_error(metric_id: u32) -> Option<String> {
        #[cfg(feature = "with_gecko")]
        match metric_id {
{% for metric_id, event in events_by_id.items() %}
           {{metric_id}} => test_get_errors!(super::{{event}}),
{% endfor %}
           _ => panic!("No event for metric id {}", metric_id),
        }

        #[cfg(not(feature = "with_gecko"))]
        {
            return None;
        }
    }

{% for labeled_type, labeleds_by_id in labeleds_by_id_by_type.items() %}
    /// Gets the submetric from the specified labeled_{{labeled_type}} metric.
    ///
    /// # Arguments
    ///
    /// * `metric_id` - The metric's ID to look up
    /// * `label` - The label identifying the {{labeled_type}} submetric.
    ///
    /// # Returns
    ///
    /// Returns the {{labeled_type}} submetric.
    ///
    /// # Panics
    ///
    /// Panics if no labeled_{{labeled_type}} by the given metric ID could be found.
    #[allow(unused_variables)]
    pub(crate) fn labeled_{{labeled_type}}_get(metric_id: u32, label: &str) -> Labeled{{labeled_type|Camelize}}Metric {
        match metric_id {
{% for metric_id, (labeled, _) in labeleds_by_id.items() %}
            {{metric_id}} => super::{{labeled}}.get(label),
{% endfor %}
            _ => panic!("No labeled_{{labeled_type}} for metric id {}", metric_id),
        }
    }

    /// Gets the submetric from the specified labeled_{{labeled_type}} metric, by enum.
    ///
    /// # Arguments
    ///
    /// * `metric_id` - The metric's ID to look up
    /// * `label_enum` - The label enum identifying the {{labeled_type}} submetric.
    ///
    /// # Returns
    ///
    /// Returns the {{labeled_type}} submetric.
    ///
    /// # Panics
    ///
    /// Panics if no labeled_{{labeled_type}} by the given metric ID could be found.
    #[allow(unused_variables)]
    pub(crate) fn labeled_{{labeled_type}}_enum_get(metric_id: u32, label_enum: u16) -> Labeled{{labeled_type|Camelize}}Metric {
        match metric_id {
{% for metric_id, (labeled, has_enum) in labeleds_by_id.items() %}
{% if has_enum %}
            {{metric_id}} => super::{{labeled}}.get(labeled_enum_to_str(metric_id, label_enum)),
{% endif %}
{% endfor %}
            _ => panic!("No labeled_{{labeled_type}} for metric id {}", metric_id),
        }
    }
{% endfor %}

    pub(crate) fn labeled_enum_to_str(metric_id: u32, label: u16) -> &'static str {
        match metric_id {
{% for category_name, objs in all_objs.items() %}
{% for obj in objs.values() %}
{% if obj.labeled and obj.labels and obj.labels|length %}
            {{obj|metric_id}} => super::{{category_name|snake_case}}::{{obj.name|Camelize}}Label::from(label).into(),
{% endif %}
{% endfor %}
{% endfor %}
            _ => panic!("Can't turn label enum to string for metric {} which isn't a labeled metric with static labels", metric_id),
        }
    }

    pub(crate) mod submetric_maps {
        use std::sync::{
          atomic::AtomicU32,
          RwLock,
        };
        use super::*;

        pub(crate) const SUBMETRIC_BIT: u32 = {{submetric_bit}};
        pub(crate) static NEXT_LABELED_SUBMETRIC_ID: AtomicU32 = AtomicU32::new((1 << SUBMETRIC_BIT) + 1);
        pub(crate) static LABELED_METRICS_TO_IDS: Lazy<RwLock<HashMap<(u32, String), u32>>> = Lazy::new(||
            RwLock::new(HashMap::new())
        );
        pub(crate) static LABELED_ENUMS_TO_IDS: Lazy<RwLock<HashMap<(u32, u16), u32>>> = Lazy::new(||
            RwLock::new(HashMap::new())
        );

{% for typ, metrics in metric_by_type.items() %}
{% if typ.0 in ('BOOLEAN_MAP', 'COUNTER_MAP', 'STRING_MAP') %}
        pub static {{typ.0}}: Lazy<RwLock<HashMap<MetricId, Labeled{{typ.1}}>>> = Lazy::new(||
            RwLock::new(HashMap::new())
        );
{% endif %}
{% endfor%}
    }
}
{% endif %}